雙屋脊輕鋼馬鈴薯儲藏庫主剛架設計與分析
劉承宗 張玉生
- 摘 要
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劉承宗 （上海美建鋼結構有限公司 201103）張玉生 （鐵道部第四勘察設計院 武漢 430063）
[提要] 詳細論述了一復雜體型馬鈴薯儲藏庫主剛架的計算、分析與設計過程。該結構主剛架采用冷彎薄壁構件，按美國UBC規(guī)范進行荷載分析和組合；按許用應力法(ASD)設計冷彎薄壁構件；按摩擦型高強螺栓連接設計節(jié)點。且考慮了屋面活載不均勻效應、雪壓堆積效應和水平地震作用的影響，荷載組合復雜。文中設計的冷彎薄壁型鋼構件按我國規(guī)范GBJ18-87驗算也是滿足要求的。
[關鍵詞] 輕鋼結構 冷彎薄壁型鋼 荷載組合
This papcr dctailcd the computation, analysis and dcsign of the rigid frame of a potato storagc. This storage has a complcx shape with two ridgcs, and the rigid frame is made of coldformcd stccl structural mcmbcrs. Hcrc, the analysis and combination of loads complicd with the rcquircmcnts of the 1997 cdition of Uni[orm Building Code, the cold-form mcmbcrs wcre dcsigncd by the mcthod of Allowable Stress Design,and the boltcd joints of rigid frame wcre dcsigncd as frictional conncction. The load combination is complcx with considcration of the cffcct of asymmctry distribution of live load, snow accumulation and horizontal scismic load. The cold-formcd mcmbcrs dcsigncd hcre mcct the rcquircmcnt of our country's code GBJ18-87。
Keywords: light-wcight stccl structurc; cold-formcd stccl structurc; load combination
